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Deskripsi Thin Section of Mineral


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1) No. preparat         : BM 6
·           Deskripsi Nikol Sejajar
o    Color                              : Colorless
o    Size                                : 2,3 mm dengan pembesaran 10x
o    Form                              : Anhedral
o    Cleavage                        : -
o    Fracture                          : -
o    Inclusion                        : -
o    Relief                             : rendah
o    Pleochroism                   : monokroik (1 warna)
·           Deskripsi Nikol Bersilang
o    Extinction                      : bergelombang
o    Extinction Angle           : 124º, 162º, 195º à 38º - 33º = 5º
o    Twinning                        : -
o    Twinning Angle             : -
o    Sign of Elongation         : length slow
o    Optic Sign (intervals)     : adisi (+)
o    Interference Colors        : abu-abu orde 1 – merah muda orde 2

          Mineral Name               : Quartz

2) No. preparat         : 11 – B9
·           Deskripsi Nikol Sejajar
o    Color                              : abu-abu
o    Size                                :
o    Form                              : anhedral
o    Cleavage                        : -
o    Fracture                          : -
o    Inclusion                        : -
o    Relief                             : rendah
o    Pleochroism                   : monokroik (1 warna)
·           Deskripsi Nikol Bersilang
o    Extinction                      : -
o    Extinction Angle            : -
o    Twinning                        : albit
o    Twinning Angle             : ke kiri = 36º, awal = 65º, ke kanan = 81º
= 23°
o    Sign of Elongation         : length slow
o    Optic Sign (intervals)     : adisi (+)
o    Interference Colors        : merah muda orde 1 – biru orde 2
                   Mineral Name            : Plagioclas

3) No. preparat         : 11 – B10
·           Deskripsi Nikol Sejajar
o    Color                              : colorless
o    Size                                :
o    Form                              : euhedral – equant grains
o    Cleavage                        : -
o    Fracture                          : -
o    Inclusion                        : -
o    Relief                             : rendah
o    Pleochroism                   : monokroik (1 warna)
·           Deskripsi Nikol Bersilang
o    Extinction                      : -
o    Extinction Angle           : -
o    Twinning                        : carlsbad
o    Twinning Angle             : 374º - 272º = 62º --> 31°
o    Sign of Elongation         : length fast
o    Optic Sign (intervals)     : substraksi (–)
o    Interference Colors        : coklat orde 2 – abu-abu orde 1 
    Mineral Name             : Orthoclas

 

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2 Responses to “Deskripsi Thin Section of Mineral”

  1. Wanapati says:
    7 Maret 2012 pukul 10.38

    it's about school...?

  2. farid says:
    19 Juli 2012 pukul 07.00

    exactly! it's about my major in geological eng.

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